A Soluble and Electrically Conducting Polymer System Incorporating Thiophene and Acetylenic Moeities

  • Abhijit Sarkar
  • Leong L. San
  • Hardy S. O. Chan
  • Siu C. Ng

Abstract

For the last two and a half decades, conducting polymers have been at the forefront of research activity all over the world. The chemists as well as physicists are interested in this class of polymers due to their potential applications. Several research groups have investigated polythiophene due to its high environmental stability and its conjugated system in both neutral-insulating as well as doped-conducting state.1,2 Researchers have been trying to engineer the monomer system, either by introducing substituents on the thiophene rings or by introduction of spacers, in order to get polymers with desired properties. It has been reported in the literature that the conductivity is largely compromised if an ethylene or an acetylenic spacer is introduced in between the two thiophene rings of the bithiophene monomer.3 However, we have found in our laboratory that such a monomeric system gives polymers with conductivity as high as 2 S cm-1 in doped form apart from having low band gap energy. Moreover, by functionalising the thiophene units, we were able to get electroactive polymers soluble in organic solvents.

Keywords

Oxidation Potential Thiophene Ring Electroactive Polymer Dope Polymer Thiophene Unit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    B. Krische, J. Helberg and C. Lilja, J. Chem. Soc. Chem. Comunn., 1496, 1987; B. Krische and M. Zagorska, Synth. Met., 41–42, 503, 1991.Google Scholar
  2. 2.
    A. Sarkar, PhD Thesis, IIT Bombay, 1993;Google Scholar
  3. 2a.
    A. Sarkar, A. Kulkarni, A. Q. Contractor and S.S. Talwar, in “Polymer Science-Contemporary Themes”, S. Shivram, ed., Tata McGraw Hill, New Delhi, pp. 267, 1991.Google Scholar
  4. 3.
    M. Onodo, T. Iwasa, T. Kawai and K. Yoshino, J. Phys. D : Appl. Phys., 24, 2076, 1991;CrossRefGoogle Scholar
  5. 3a.
    G. Koßmehl, Macromol. Chem. Macromol. Symp., 4, 45, 1986;CrossRefGoogle Scholar
  6. 3b.
    E. Cernia, L. D. Ilario, G. Ortaggi, M. Scarsell, R. Scialis and G. Sleiter. Gazzetta Chimica Italiana, 119, 309, 1989.Google Scholar
  7. 4.
    A. Carpita, A. Lessi and R. Rossie, Synthesis, 571, 1984.Google Scholar
  8. 5.
    J. P. Ferraris, A. Bravo, W. Kim and D. C. Hrncir, J. Chem. Soc. Chem. Commun., 991,1994.Google Scholar
  9. 6.
    H. S. O. Chan, S. C. Ng, S. H. Seow and M. J. G. Moderscheim, J. Mater. Chem., 2, 1135, 1992.CrossRefGoogle Scholar
  10. 7.
    T. A. Chen and R. D. Rieke, Synth. Met., 60, 174, 1993.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Abhijit Sarkar
    • 1
  • Leong L. San
    • 1
  • Hardy S. O. Chan
    • 1
  • Siu C. Ng
  1. 1.Department of ChemistryNational University of SingaporeSingaporeSingapore

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